Answer:
51:49 is the ratio of female participants to male participants.
Explanation:
Percentage of females in the race = 51 %
Percentage of males in the race = 100% - 51 % = 49%
Total participants in race = 400
Number of women participants = [tex]51% of 400=\frac{51}{100}\times 400=204[/tex]
Number of men participants  = [tex]49% of 400=\frac{49}{100}\times 400=196[/tex]
Ratio of female participants to male participants :
[tex]\frac{204}{196}=\frac{51}{49}=51:49[/tex]
